So far this year, 37 ETFs have closed, but on the flip side, more than 150 new funds have come to market. On top of that, competition in the industry has remained as fierce as ever as brokerages and providers slash fees and commissions to lure new money. [5 Signs An ETF May Close Up Shop.]

One ETF industry insider reveals that the best thing for an investor to do when they are invested in an ETF closing up is use a limit order to sell their shares before the last day of trading to avoid getting caught up in the liquidation process. [Your ETF Is Closing; Now What?]

Tisha Guerrero contributed to this article.

The opinions and forecasts expressed herein are solely those of Tom Lydon, and may not actually come to pass. Information on this site should not be used or construed as an offer to sell, a solicitation of an offer to buy, or a recommendation for any product.